info.informatica.doc.agent
Class ResourceDownloader<C>

java.lang.Object
  java.lang.Thread
      info.informatica.doc.agent.ResourceDownloader<C>

All Implemented Interfaces:

Runnable

public abstract class ResourceDownloader<C>
extends Thread

Asynchronous downloading of an embedded resource of a given type.

Author:

Carlos Amengual

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

Thread.State, Thread.UncaughtExceptionHandler

Field Summary

protected List<DownloadListener<C>>	listeners
protected C	nativeContent

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

ResourceDownloader(URL url)

Method Summary

void	addImageListener(DownloadListener<C> listener)
C	getNativeContent()
URL	getURL()
boolean	isDone()
protected void	notifyDownload()
protected void	notifyFailure(IOException e)
protected InputStream	openStream()
protected abstract void	readContent(InputStream is) Reads content from a stream and transforms it to native content.
void	run()

Methods inherited from class java.lang.Thread

activeCount, checkAccess, clone, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

nativeContent

protected C nativeContent

listeners

protected List<DownloadListener<C>> listeners

Constructor Detail

ResourceDownloader

public ResourceDownloader(URL url)

Method Detail

getURL

public URL getURL()

addImageListener

public void addImageListener(DownloadListener<C> listener)

isDone

public boolean isDone()

run

public void run()

Specified by:

run in interface Runnable

Overrides:

run in class Thread

openStream

protected InputStream openStream()
                          throws IOException

Throws:

IOException

readContent

protected abstract void readContent(InputStream is)
                             throws IOException

Reads content from a stream and transforms it to native content.

Parameters:

is - the stream with the content.

Throws:

IOException - if an error occurs when reading the stream.

notifyDownload

protected void notifyDownload()

notifyFailure

protected void notifyFailure(IOException e)

getNativeContent

public C getNativeContent()